Rigorous solution by analytical regularization method to the problem of 3D TM-ϕ wave diffraction by a set of axially symmetrical annular PEC surfaces

The analytical regularization method is applied to the problem of 3D TM-φ wave diffraction by perfectly conductive axially symmetrical annular surfaces consisting a set of closed and unclosed ones. The electromagnetic boundary value problem is reduced to the infinite algebraic system of the second kind which in principal can be solved with any predetermined accuracy by means of truncation procedure. Numerical results, including condition number and field's space distribution for obstacles will be presented.